What it is
Acetyl Tetrapeptide-2 is a short signal-type peptide consisting of four amino acid residues with an acetyl group attached to improve stability and skin compatibility. It is incorporated into serums and sunscreens marketed for firmness and overall skin quality, where it functions as a conditioning agent. As with most cosmetic peptides, it is used at low concentrations within a supporting role rather than as a primary active.
Safety & warnings
Cosmetic peptides like Acetyl Tetrapeptide-2 are generally well tolerated at the low levels used in skincare and are not associated with significant irritation or sensitization for most users. They are water-soluble conditioning agents and are not considered comedogenic.
Origin & sourcing
Synthetic; manufactured by peptide synthesis that assembles a defined sequence of amino acids and caps the chain with an acetyl group.
Questions everyone asks
What is Acetyl Tetrapeptide-2 used for?
It is a peptide skin-conditioning ingredient added to serums and sunscreens, typically in formulas positioned around firmness and skin quality.
Is it natural or synthetic?
It is synthetic, produced by peptide synthesis to create a specific, stable four-amino-acid sequence.